title: Genotypic relationships between Taenia saginata, Taenia asiatica and their hybrids.
abstract: Partial sequences of the DNA polymerase delta (pold) gene from Taenia saginata-like adult worms were sequenced. Phylogenetic analysis revealed that pold gene sequences were clearly divided into two clades, differing from each other in five to seven nucleotides. There is little doubt that T. saginata and Taenia asiatica were once separated into two distinct taxa as has been concluded in previous studies. On the other hand, most of the adult worms, which were identified as T. asiatica using mitochondrial DNA, were homozygous for an allele that originated from the allele of T. saginata via single nucleotide substitution. These results indicate that most of the adult worms, which had been called T. asiatica, are not actually 'pure T. asiatica' but instead originated from the hybridization of 'pure T. saginata' and 'pure T. asiatica'.
authors.affiliation: Laboratory of Veterinary Parasitology, Faculty of Agriculture, Yamaguchi University, Yamaguchi, Yamaguchi, Japan.
authors.forename: Kanako
authors.initials: K
authors.lastname: Yamane
authors.forename: Tetsuya
authors.initials: T
authors.lastname: Yanagida
authors.forename: Tiaoying
authors.initials: T
authors.lastname: Li
authors.forename: Xingwang
authors.initials: X
authors.lastname: Chen
authors.forename: Paron
authors.initials: P
authors.lastname: Dekumyoy
authors.forename: Jitra
authors.initials: J
authors.lastname: Waikagul
authors.forename: Agathe
authors.initials: A
authors.lastname: Nkouawa
authors.forename: Minoru
authors.initials: M
authors.lastname: Nakao
authors.forename: Yasuhito
authors.initials: Y
authors.lastname: Sako
authors.forename: Akira
authors.initials: A
authors.lastname: Ito
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Sato
authors.forename: Munehiro
authors.initials: M
authors.lastname: Okamoto
mesh_terms: D000483:Alleles; D000818:Animals; D002678:Chimera / Q000235:genetics; D004258:DNA Polymerase III / Q000145:classification / Q000235:genetics*; D018509:DNA, Helminth / Q000145:classification / Q000235:genetics*; D004272:DNA, Mitochondrial / Q000145:classification / Q000235:genetics*; D005838:Genotype; D006720:Homozygote; D010802:Phylogeny; D020641:Polymorphism, Single Nucleotide; D017422:Sequence Analysis, DNA; D013621:Taenia / Q000145:classification / Q000235:genetics*; D041202:Taenia saginata / Q000235:genetics*; D013622:Taeniasis / Q000469:parasitology
chemical_list: D018509:DNA, Helminth; D004272:DNA, Mitochondrial; D004258:DNA Polymerase III